Pressure control mechanism for fireguns

ABSTRACT

The present invention relates to a pressure control structure that is developed to be used in semi-automatic firearms operating with gas pressure, that allows for using any type of live ammunition (small/magnum) easily by maintaining the stability of the gas pressure created as a result of firing the firearm and enables cocking the rifle mechanism, that protects the parts of the rifle as well as the assembly thereof and that provides the user a more comfortable firing experience.

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a pressure control structure that isdeveloped to be used in semi- automatic firearms operating with gaspressure, that allows for using any type of live ammunition(small/magnum) easily by maintaining the stability of the gas pressurecreated as a result of firing the firearm and enables cocking the riflemechanism, that protects the parts of the rifle as well as the assemblythereof and that provides the user a more comfortable firing experience.

PRIOR ART

Nowadays, many different ammunition types of various grammage andstructure are utilized in semi-automatic firearms. Considering theoperation principle of a firearm used in the state of the art, theammunition is fed into the chamber and fired via the firearm muzzle,thereby creating a gas pressure upon the burning of the gunpowdercontained therein. The gas generated therein allows for firing thebullet inside the ammunition through the barrel of the firearm.Meanwhile, some portion of the generated gas passes through the gas portcreated on the barrel and fills into the gas chamber, thereby pushingthe gas piston. Thus, the mechanism of the firearm may be cocked onceagain. This cycle is repeated for every piece of ammunition that isgoing to be fired. When using a type of ammunition that is suitable forsmall firearms, a reduced amount of gas pressure is generated as theamount of the gunpowder contained within the ammunition is lower. Gaspressure reaching the gas piston should not be exposed to any leaks inorder to ensure that the mechanism of the firearm may be cocked againproperly. Therefore, the gap between the gas chamber and the gas pistonis quite small. However, when a type of ammunition that is suitable forheavy arms (magnum) is desired to be used in firearms formed in suchmanner, the gas piston moves with breakneck speed as the amount of thegunpowder charge is much higher, thereby causing damage to the riflemechanism as well as the assembly thereof. Using both small and heavy(magnum) arms ammunition in the same firearm poses serious problems. Thefirearm fails to offer the same efficiency in both cases.

Briefly, the amount of pressure generated as a result of firingammunition types used nowadays varies based on the gunpowder amountcontained by said ammunition types. Therefore, the pressure generated byammunitions suitable for use in small arms and the pressure generated byheavy (magnum) arms ammunition is much different from one another. Thisparticular difference causes various problems when ammunition types withdifferent fillings are desired to be used in the same firearm. Whenusing a type of ammunition that is suitable for small arms, the firearmcannot be cocked again after firing, and when using a type of ammunitionthat is suitable for heavy arms, the mechanism, as well as the assemblyof the firearm, may sustain damage.

In the state of the art, various studies have been conducted in order toeliminate the existing drawbacks and to ensure that both types ofammunition may be used in the same firearm in a safe and problem-freemanner.

In order to eliminate this drawback in the state of the art, at leasttwo gas pistons are produced, and accordingly, it is enabled to usedifferent types of ammunition with different fillings in the samefirearm by means of changing the piston. In this application, however,additional costs incur as the user is required to purchase a second gaspiston. Furthermore, the user is initially required to remove theinstalled gas piston on the firearm in order to replace and install theother respective gas piston when the weight of the ammunition changesduring utilization. This causes difficulty of use for the user everytime the user wishes to change the ammunition type. Moreover, losing theadditional gas piston for different types of ammunition is also amongthe frequently encountered problems.

In the state of the art, different types of ammunition are tried to beused by producing a single-piston structure having different diameterson both sides. Just like in the previous application disclosed above,this application also requires removing and reinstalling the gas pistonin order to change its direction as the weight of the ammunitionchanges.

Another application in the state of the art aims to discharge theammunition by opening the gas port created on the barrel of the firearm,by means of turning a valve on and off. This particular applicationrequires a wrench and an additional apparatus. In other words, anadditional element is required to be able to adjust the gas pressure.Quite naturally, this brings additional costs for the user. Furthermore,since said valve is positioned on the barrel portion of the firearm, itdisrupts the stance of the user, i.e. the line of firing position getsinterrupted, thereby inducing difficulty of use. This is, of course, anundesired result for the user. Moreover, the system formed together witha valve, requires frequent maintenance. In case periodical maintenancegets disrupted or not performed regularly, the system may stop workingproperly and become dysfunctional.

In another application in the state of the art, systems with regulatorsare utilized for pressure control structuring in firearms. Althoughthese systems which comprise regulators, provide a viable solution forsmall firearms, they cause major problems in heavier firearms utilizingmagnum ammunition. However, adjusting the system with regulator fallsbehind the instant involving the re-cocking of the firearm under highpressure. Therefore, such systems are not recommended for being usedwith magnum ammunitions.

Consequently, it became necessary to perform R&D activities on thepressure control structure of firearms and carrying out manufacturingactivities accordingly in order to eliminate the disadvantages in thestate of the art as disclosed above and to provide a solution to theexisting problems.

OBJECTS OF THE INVENTION

The present invention relates to a pressure control structure designedto eliminate all disadvantages and problems existing in the state of theart.

The object of the present invention is to ensure that all sorts ofammunitions with any type of filling may be fired by means of theinventive structure in the same safety characteristics withoutdisassembling the firearm and without replacing or changing anycomponent mounted on the rifle assembly. This is the most importantcharacteristic of the present invention. The inventive structure allowsfor firing any type of ammunition, be it for small or heavier arms, in asafe and proper manner without making any changes on the firearmassembly.

Another object of the present invention is to ensure that any type ofammunition to be fired is moved to the firing position by intervening inthe inventive pressure control structure even during firing withoutdisrupting the line of firing position.

Yet another object of the present invention is to provide a pressurecontrol structure that is both cost-efficient and timesaving for theuser. Additionally, the fact that the inventive pressure controlstructure is easily accessible provides a further advantage.

Another object of the present invention is to provide a pressure controlstructure that utilizes a single-piston contrary to the applicationsknown in the state of the art and that allows for adjusting the pressureof the gas reaching the piston during firing. The inventive structureensures that the entire pressure of the gas generated when using a typeof ammunition suitable for small arms reaches to the piston, and theexcess gas pressure arising from using a type of ammunition suitable forheavier arms is discharged from the gas chamber in the firearm. Thus,the operation of the firearm is rendered more stable as the firearm isexposed to the same amount of gas pressure regardless of the ammunitiontype. Enough gas pressure is utilized when the firearm is operated witha type of ammunition that is suitable for heavy arms, and the excessamount of pressure is discharged, thereby preventing the firearmmechanism as well as the assembly thereof from sustaining damage.

Initially, a gas chamber is created in order to achieve the objects ofthe present invention. Said gas chamber is of a hollow cylindricalstructure, wherein it comprises a piston seat, a bolt handle seat, and agas discharge port (exhaust) positioned thereon. The bolt handle isanother important component of the inventive pressure control structure.It is composed of the interconnection of the bolt handlebar and the ballsetscrew.

SUMMARY

In accordance with an aspect of these disclosures, there is provided apressure control structure for firearms, including at least one gasdischarge port that may enable adjusting the gas pressure by beingopened and closed; and a gas chamber where on its wall the gas dischargeport may be positioned, such that the gas chamber may not come intocontact with a gas piston.

The gas chamber may also have at least one gas chamber lug that mayincorporate a hole running along the length of the gas chamber and mayhave a bolt handle seat located inside of the gas chamber lug.

One end of the bolt handle may be positioned in a gas chamber and mayextend to at least one gas discharge port and another end of the bolthandle may extend to a firearm chassis. The one end of the bolt handlethat extends to the gas discharge port may move inside of a gas chamberlug. The bolt handle may further include at least one bolt handlebarthat may be positioned on one end of the bolt handle such that the bolthandlebar may further allow fixing of the position of the bolt handle.

The bolt handle may have at least one bolt handlebar positioning holethat allows positioning of the bolt handlebar to the bolt handle. Thebolt handle may also have at least one ball setscrew hole which may beformed on the bolt handle and may be adjacent to the bolt handlebarpositioning hole.

The bolt handle may have at least one ball setscrew that may be insertedinto the ball setscrew hole and also may have a stepped shaft structuresuch that the stepped shaft structure may have a wider structure thanthe rest of the bolt handle structure.

The firearm chassis may have at least two bolt handle positioning holesinto which the bolt handlebar may be seated in order to fix the positionof one end of the bolt handle which may be located inside a bolt handleseat and also may fix the position of the other end of the bolt handlelocated in the firearm chassis. The firearm chassis may have a bolthandle seat.

The firearm chassis may also have at least one bolt handle spring thatmay be connected to the bolt handle by being positioned in the firearmchassis.

DETAILED DESCRIPTION OF THE INVENTION

To be able to understand the novelties brought forth for the purpose ofachieving the aforementioned objects, the inventive gas pressure controlstructure needs to be evaluated in consideration of the figuresdisclosed below, wherein;

FIG. 1 illustrates the drawing in which the gas discharge port (exhaust)is shut by the bolt handle in the system installed to a firearm suitablefor firing ammunition for small arms.

FIG. 2 illustrates the drawing in which the gas discharge port (exhaust)is open in the system installed to a firearm suitable for firingammunition for heavy arms (magnum).

FIG. 3 illustrates the front perspective view of the gas chamber whichis the first element of the inventive structure.

FIG. 4 illustrates the rear perspective view of the gas chamber which isthe first element of the inventive structure.

FIG. 5 illustrates the sectional view of the gas chamber which is thefirst element of the inventive structure.

FIG. 6 illustrates the assembled view of the bolt handle and theelements constituting it.

FIG. 7 illustrates the disassembled view of the bolt handle and theelements constituting it.

The components of the inventive pressure control system are enumeratedwith reference numerals in the annexed figures in order to ensure abetter understanding of the inventive pressure control system, wherein;

1-Barrel

2-Gas Chamber

3-Gas Piston

4-Bolt Handle

5-Bolt Handlebar

6-Ball Setscrew

7-Bolt Handle Spring

8-Firearm Chassis

9-Bolt Handle Positioning Hole

10-Barrel Gas Port

11-Bolt Handle Seat

12-Gas Discharge Port

13-Gas Piston Seat

14-Gas Chamber Lug

15-Bolt Handlebar Positioning Hole

16-Ball Setscrew Hole

17-Bolt Handle Seat

Gas chamber (2) is formed as the first element of the inventive pressurecontrol structure. The most important characteristic of the gas chamber(2) is that it comprises a gas discharge port (12) thereon. Adjustmentof the gas pressure inside the gas chamber (2) is performed opening andclosing the gas discharge port (12). The position of the gas dischargeport (12) on the gas chamber (2) is located on a surface to which thegas piston (3) does not come into contact with. Said gas chamber (2) isof a cylindrical structure wherein it comprises a gas piston seat (13)that allows for positioning the gas piston (3) therein.

As it is illustrated in FIG. 4, the gas chamber has a gas chamber lug(14) of rectangular shape located on the upper portion thereof.

As illustrated in FIG. 3, a hole is made in an end-to-end relationwithin the inner portion of the gas chamber lug (14), and a bolt handleseat (11) is created therein to which the bolt handle (4) is connected.

As illustrated in FIG. 5, a gas discharge port (12) is created on thegas chamber lug (14) in a manner in which the bolt handle seat (11) isperpendicular to the lug and that it opens onto the gas piston seat(13).

Another important element of the inventive pressure control structure isthe bolt handle (4). As illustrated in FIG. 6, the bolt handle (4) isstructured to have a stepped shaft shape, wherein an end thereof isfine, and the other end is thick. The thick end of the bolt handlecomprises the bolt handlebar positioning hole (15) to which the bolthandlebar (5) is connected and a ball setscrew hole (16) to which theball setscrew (6) is mounted.

The bolt handle spring (7) is inserted into the bolt handle seat (17)that is initially created on the firearm chassis (8) while the elementsdisassembled views of which are illustrated in FIG. 7 are beinginstalled. The thicker portion of the bolt handle (4) is aligned andpushed forward such that it engages the bolt handle seat (17) created onthe firearm chassis (8). The bolt handlebar (5) is attached to the bolthandlebar positioning hole (15) on the bolt handle (4), to ensure thatsaid bolt handle (4) is positioned such that it may freely move on thefirearm chassis (8). A ball setscrew (6) attached to the bolt handle (4)is entrusted with preventing the bolt handlebar (5) from gettinginvoluntarily removed from its respective place. The bolt handle spring(7) inserted into the bolt handle seat (17) absorbs the space of thebolt handle (4), thereby providing said bolt handle (4) betterpositioning. Said bolt handle (4) is positioned on the firearm chassis(8) such that the user may readily reach it. Thus, the user mayintervene in the system without disrupting the line of firing position.

Thin end of the bolt handle (4) is positioned into the bolt handle seat(11) located on the gas chamber (2). Thus, the bolt handle (4) ispositioned such that an end thereof operates inside the firearm chassis(8) and the other end operates within the gas chamber (2). Gas dischargeport (12) is opened and closed by means of the movements of the bolthandle (4), thereby performing the operation of the system. When thebolt handle (4) is pushed in the direction of the barrel (1), the gasdischarge port (12) moves into the closed position. The bolt handlebar(5) positioned on the bolt handle (4) is seated to the bolt handlepositioning hole (9) that is closer to the barrel (1). Thus, the bolthandle (4) may be fixed in the position in which it closes the gasdischarge port (12). As illustrated in FIG. 1, the entire volume of gascoming from the barrel to the gas chamber (2) may reach the gas piston(3). Thus, the entire volume of gas generated returns to the firearmchassis (8) by passing through the barrel gas port (10), therebyassisting in re-cocking of the firearm. Thus, ammunition types suitablefor small arms may be ejected from the system in a problem-free manner.

When the bolt handle (4) is pulled back, i.e. towards the firearmchassis (8), gas discharge port (12) opens. The bolt handlebar (5)positioned on the bolt handle (4) is seated to a second bolt handlepositioning hole (9) created at a rear end thereof. Thus, it ensuresthat the gas discharge port (12) stays in the open position. Thus, asillustrated in FIG. 2, the firearm is switched to the position in whichit is capable of firing the type of ammunition suitable for heavy arms(magnum). Some portion of the high-pressure gas arriving at the gaschamber (2) is discharged through the gas discharge port (12). The restof the gas generated returns to the firearm chassis (8) by passingthrough the barrel gas port (10), thereby assisting in re-cocking of thefirearm. Thus, the firearm is operated such that it utilizes ammunitiontype suitable for small arms, hence the mechanism, as well as theassembly of the firearm and the user, are prevented from sustaining anydamage.

1. A pressure control structure for firearms, comprising: at least onegas discharge port that enables adjusting the gas pressure by beingopened and closed; and a gas chamber where on its wall the gas dischargeport is positioned, such that the gas chamber does not come into contactwith a gas piston.
 2. The pressure control structure for firearms ofclaim 1, wherein the gas chamber has at least one gas chamber lug thatincorporates a hole running along the length of the gas chamber and abolt handle seat located inside of the gas chamber lug.
 3. A pressurecontrol structure for firearms, comprising at least one bolt handle,wherein one end of the bolt handle is positioned in a gas chamber andextends to at least one gas discharge port.
 4. The pressure controlstructure for firearms of claim 3, wherein another end of the bolthandle extends to a firearm chassis.
 5. The pressure control structurefor firearms of claim 3, wherein one end of the bolt handle that extendsto the gas discharge port moves inside of a gas chamber lug.
 6. Thepressure control structure for firearms of claim 3, wherein the bolthandle further comprises at least one bolt handlebar that is positionedon one end of the bolt handle such that the bolt handlebar furtherallows fixing of the position of the bolt handle.
 7. The pressurecontrol structure for firearms of claim 6, wherein the bolt handle hasat least one bolt handlebar positioning hole that allows positioning ofthe bolt handlebar to the bolt handle.
 8. The pressure control structurefor firearms of claim 6, wherein the bolt handle has at least one ballsetscrew hole formed on the bolt handle and adjacent to the bolthandlebar positioning hole.
 9. The pressure control structure forfirearms of claim 8, wherein the bolt handle has at least one ballsetscrew that is inserted into the ball setscrew hole.
 10. The pressurecontrol structure for firearms of claim 3, wherein the bolt handle has astepped shaft structure such that the stepped shaft structure has awider structure than the rest of the bolt handle structure.
 11. Thepressure control structure for firearms of claim 6, wherein a firearmchassis has at least two bolt handle positioning holes into which thebolt handlebar can be seated, in order to fix the position of one end ofthe bolt handle located inside a bolt handle seat and also to fix theposition of the other end of the bolt handle located in the firearmchassis.
 12. The pressure control structure for firearms of claim 4,wherein the firearm chassis has a bolt handle seat.
 13. The pressurecontrol structure for firearms of claim 4, wherein the firearm chassishas at least one bolt handle spring that is connected to the bolt handleby being positioned in the firearm chassis.